If a sample initially contains 100 g of a radioactive isotope, how much will be left after 3 half lives? question 1 options: 50 g 25 g 12.5 g 6.25 g

What is the maximum number of electrons that an atomic orbital can contain?

An observation that requires measurement is called quantitative observable or qualitative

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml